Concrete-Filled Steel Tube Reticulated Shell Seismic Analysis

The concrete-filled steel tube structure has lots of eminent merits, for example, not only it has very great rigidity and its ability to resist the earthquake is great, but also it combines the load-bearing function with the guarding function, so the strength of the concrete and the steels can be used and it can save steels and reduce the cast, either the domestic or the foreign researchers place great emphasis on it and get the great achievements.So, this article uses concrete-filled steel ttube component in space structures, and proposes a new space structures named concrete-filled steel tube reticulated shell. Using the large-scale finite element procedure ANSYS and the method of time-history analysis ,this paper analyzes structure under the earthquake, the structure's distortion and the stress characteristic obtained can proposes the reference for the design work. The prime work is as follows:(1) This article has made a preliminary study to concrete-filled steel tube reticulated shell's structural property; inspects its vibration natural frequency and analyzed the concrete-filled steel tube reticulated shell of different structural styles.Then summarized the rule of frequency and vibration change in this structure.(2) This article uses three kinds of dynamic acceleration function at concrete-filled steel tube reticulated shell, and use the method of finite element analysis carries on the solution, and analyzes the displacement and the the dynamic responses of this structure.(3) This article carries on the seismic analysis to the steel tube reticulated shell style, and made contrast on the comparison of the two kinds of structures,and analyse the advantages and disadvantages of concrete-filled steel tube reticulated shell.(4) This article carries on seismic analysis to concrete-filled steel tube reticulated shell of different structure parameter, and analyse the result to obtain the effect of structure parameter in earth-quake.